mkdir in C

[Doug Gwyn]

In article <009375FC.8A3B0AC0 at rigel.efd.lth.se> e89hse at rigel.efd.lth.se writes:
> I'd like to know if there is any way for a C-program to create a directory.
>The mkdir(2) call doesn't exist on the machine I'm using. It is possible to
>create a directory with the mknod(2) call, but then you have to have
>effective-user-id 0 (super user). Of course one could set the substitute user
>flag, but isn't there a more elegant way to do it.

The reason mknod() is protected even for making directory inodes is
that you need to also plant the . and .. links, or havoc will ensue.

The simplest solution is to invoke the privileged system utility:
	system("mkdir whatever");